Improvement in journals for sewing-machine fly-wheels



GEORGE REHFUSS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE AMERICAN BUTTON-HOLE OVERSEAMING AND PANY, OF SAME PLAGE.

SEWIN G-MACHIN E OOM- IMPROVEMENTIN JOURNALS FOR SEWING-MACHINE FLY-WHEELS.

Specification forming part of Letters Patent No. 161,823, dated April 6, 1875; application filed February 15, 1875.

To all whom t may concern Be it known that I, GEORGE REHEUss, of Philadelphia, Pennsylvania, have invented a certain Improvement in Sewing-Machines, ot' which the following is a speciiication:

The object of my invention is to readily Set up the balance-wheel pin of a sewing-machine, when the hub of the wheel becomes loose on the said pin, and this object I attain in the manner I will now proceed to describe, reference being had to the accompanying drawing, in which- Figure l represents a vertical section ofthe balance-wheel and part of the frame of a sewing-machine; and Fig. 2 a perspective view of the pin.

A represents part of one of the frames or standards of a sewing-machine, and D the balance-wheelhavin g the usual grooved drivingpulley d, and a hub, e, adapted to a pin, B, which is fitted snugly into the frame A7 but so as to be readily adjusted longitudinally therein. The head f of the pin is cone-shaped, and adapted to the conical or countersunk edge of the opening in the hub of the wheel. The pin, where it passes through the frame, has

an elongated recess, la, best observed in Fig. 2, and in this recess lits the end of a set-screw,

i, passing through partof the frame, and serving to secure the pin to the same.

WVhen the hub of the wheel, through bcontinued wear, becomes loose on the pin, all that is necessary to take up the slack and prevent the irregular rotation and rattling ofthe wheel is to first loosen the screw z', then set up or adjust the pin in the direction of the arrow to an extent sufoient to properly confine the hub of the wheel between the head f and the frame, and then tighten the screw, and this may be done from time to time whenever the hub of the wheel becomes loose on the pin.

I claim as my invention- The combination of the hub e of the balance-wheel, with the pin B, so tted to the frame as to 'be adjustable therein, and having a conical head, f, and a longitudinal recess, h, adapt-ed'to the set-screw l in the frame, all as set forth.

In testimony whereof I vhave signed my name to this specification in the presence of two subscribing witnesses.

, GEO. REHFUSS. Witnesses:

HUBERT HowsoN,

HARRY SMITH. 

